Measurements:
°C
°F
St. George Island
80°F
NW 11 mph
Feels like: 82°F
Precip: 0%
World Resorts USA St. George Island Weather

St. George Island Sea Water Temperature

Current Sea Water Temperature:
+74.0°F
Maximum Sea Water Temperature in April: 81.4°F
Minimum Sea Water Temperature in April: 67.2°F
Average water temperature in April: 73.9°F

Sea Water Temperature for the Last 10 Days:

April 23 74.0°F April 18 76.6°F
April 22 74.6°F April 17 76.6°F
April 21 73.8°F April 16 76.4°F
April 20 76.8°F April 15 75.4°F
April 19 76.0°F April 14 73.6°F

When is the Warmest Sea for St. George Island?

According to our data for the last three years for St. George Island the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for St. George Island was 90.5°F. The maximum and minimum values were 88.6°F and 92.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St. George Island was 90.4°F. The maximum and minimum values were 89.0°F and 93.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St. George Island was 87.3°F. The maximum and minimum values were 85.2°F and 89.0°F respectively.

Best Time to Visit St. George Island
The most sunny months:
October 20 days
March 16 days
November 15 days
The most warm months:
July 90.9 °F
August 90.7 °F
June 88.6 °F
Warmest sea temperature:
August 90.5 °F
July 89.5 °F
September 87.6 °F
The most cold months:
January 59.9 °F
December 63.9 °F
February 64.5 °F
The most rainy months:
August 5 days
July 4 days
April 4 days
The most windy months:
January 9 mph
November 9 mph
March 9 mph

St. George Island on the Weather Map

USA Resorts:
NAME
Chicago +70
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +68
Los Angeles +64
Maui +70
Miami +82
Miami Beach +82
New York +76
San Diego +66
San Francisco +58
Sarasota +88
Tampa +86
Washington +82
24 Hours Weather Forecast
St. George Island
Local time: 12:11
23 apr, thursday
1500 80°F
NW
12 mph
1800 78°F
N
10 mph
2100 70°F
E
3 mph
24 apr, friday
0000 68°F
E
1 mph
0300 68°F
NW
6 mph
0600 68°F
N
4 mph
0900 74°F
NW
7 mph
1200 80°F
NW
9 mph